| gehenna(noun, difficulty, misery, trial, grave) | |
| grief(noun, trouble, blow, distress, care) | |
| hard time(noun, expression, trouble, blow, distress) | |
| hell upon earth(expression, idiom) | |
| holocaust | |
| horrific | |
| horrifying | |
| imagining(noun, desire, fancy, hope, image) | |
| mirage(noun, desire, fancy, spirit, hope) | |
| nightmares | |
| ogress | |
| pavor(noun, awful, terrible, fear, terror) | |
| pipe dream(noun, expression, concept, understanding, desire) | |
| purgatory(noun, difficulty, misery, trial, grave) | |
| revenant(noun, spirit, ghost, apparition) | |
| reverie(noun, desire, fancy, idea, impression) | |
| scare(noun, distress, anxiety, awful, terrible) | |
| scarecrow | |
| spirit(noun, dream, revelation, ghost, prophecy) | |
| struggle(noun, trouble, test, suffering, grind) |
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| APA | Smart Define. (2016). nightmare thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/nightmare/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "nightmare thesaurus" https://smartdefine.org/nightmare/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2016, nightmare thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/nightmare/thesaurus/synonyms>. |
| MLA | Smart Define. "nightmare thesaurus" 29 February 2016. Web. 23 September 2026. <https://smartdefine.org/nightmare/thesaurus/synonyms> |